Olympus Optical Company, Ltd.

Toyohiko Kimura

Tamotsu Koiwai

Akihiko Hashimoto

Shigeo Hayashi

Yukio Nakajima

Isao Kondo

Yasuo Yamazaki

When moving frames are incorporated in a fixed frame and a cam ring, the lens barrel according to this invention is ready for fitting cam followers of the moving frames in the fixed frame or a plurality of moving cain grooves disposed on the cam ring irrespective of the number of moving frames to be incorporated, thus inserting the cam followers in the moving cam grooves by way of a single assembling cam groove. Accordingly, an assembling work of the moving frames in the fixed frame and the cam ring will be greatly facilitated and in an arrangement for which the moving cam grooves are provided on the cam ring, since the cam grooves may be bottomed cam grooves, a high rigidity cam ring will be realized. The lens barrel is further provided with a barrier closing assembly for selectively covering and uncovering an object end of the lens barrel. The barrier closing assembly is closed responsive to movement of a zoom unit to a collapsed position and to movement of focussing lens group to a power off position and automatically uncovers the lens barrel responsive to movement of the zoom unit from the collapsed position toward a wide angle position, the opening force being provided by a biasing spring.

Lens barrel

A single lens reflex camera is provided which has a planar area for mounting a light emitting component such as an electronic flash thereon. The planar area is defined by at least a portion of top surface of a body of the camera which is located on one side of a pentaprism housing disposed centrally on the top surface, and is at a lower level than the remainder of the top surface which is located on the opposite side of the pentaprism housing. The planar area is formed with a threaded bore for mounting the light emitting component, and is also provided with a terminal connector having a plurality of terminals inclusive of a synchro contact terminal, an illumination control signal terminal and a power supply terminal.

Single lens reflex camera

A motor driven camera includes a reversible motor which is disposed within the body of a camera. The camera includes a transmission mechanism which transmits a drive from the motor to a film winding mechanism, a film rewind mechanism, a shutter charging assembly, an automatic focussing assembly or a zone focus assembly in a selective manner. The motor is disposed in a space in the camera body located below the film wind and rewind shafts. The drive shaft of the motor extends perpendicular to the optical axis of the camera lines.

Motor driven camera

A single-lens reflex camera comprises a gear rotated when a shutter button is depressed, a movable mirror rotated upward to the prescribed position, a stop-driving mechanism, and a control mechanism which transmits the rotation moment of the gear to the movable mirror and stop-driving mechanism to lift the movable mirror so that after the movable mirror is lifted, it actuates the stop-driving mechanism in the stop-down mode.

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Hachioji, Japan

Toyohiko Kimura